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Encoding Properties Of Auditory Neurons In The Brain Of A Soniferous Damselfish: Response To Simple Tones And Complex Conspecific Signals, Karen P. Maruska, Timothy C. Tricas
Encoding Properties Of Auditory Neurons In The Brain Of A Soniferous Damselfish: Response To Simple Tones And Complex Conspecific Signals, Karen P. Maruska, Timothy C. Tricas
Faculty Publications
The fish auditory system encodes important acoustic stimuli used in social communication, but few studies have examined response properties of central auditory neurons to natural signals. We determined the features and responses of single hindbrain and midbrain auditory neurons to tone bursts and playbacks of conspecific sounds in the soniferous damselfish, Abudefduf abdominalis. Most auditory neurons were either silent or had slow irregular resting discharge rates ~130 Hz but ranged from 80 to 400 Hz with strong phase-locking. This low-frequency sensitivity matches the frequency band of natural sounds. Auditory neurons were also modulated by playbacks of conspecific sounds with thresholds …
Laryngeal Level Amplitude Modulation In Vibrato, Christopher Dromey, Lorie Reese, J. Arden Hopkin
Laryngeal Level Amplitude Modulation In Vibrato, Christopher Dromey, Lorie Reese, J. Arden Hopkin
Faculty Publications
Objectives: The goal of this investigation was to test a new methodology for measuring amplitude modulation (AM) at the level of the vocal folds during vibrato in trained singers, because previous research has suggested that AM arises in large part as an acoustic epiphenomenon through an interaction of the harmonics in the laryngeal source with the resonances of the vocal tract as the fundamental frequency oscillates.
Study Design: A within-subjects model was used to compare vocal activity across three pitch and three loudness conditions.
Methods: Seventeen female singers with a range of training and experience were recorded with a microphone …